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2015

Thumbnail Image of SIR 2014-5224 Report Cover

USGS Scientific Investigations Report: SIR 2014–5224

Brayton, M.J., Cruz, R.M., Myers, Luke, Degnan, J.R., and Raffensperger, J.P., 2015, Hydrogeologic framework, hydrology, and refined conceptual model of groundwater flow for Coastal Plain aquifers at the Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2005–12: U.S. Geological Survey Scientific Investigations Report 2014–5224, 61 p.



2013


Thumbnail Image of SIR 2013-5043 Report Cover

USGS Scientific Investigations Report: SIR 2013–5043

Fleming, B.J., LaMotte, A.E., and Sekellick, A.J., 2013, Statistical classification of hydrogeologic regions in the fractured rock area of Maryland and parts of the District of Columbia, Virginia, West Virginia, Pennsylvania, and Delaware: U.S. Geological Survey Scientific Investigations Report 2013–5043, 14 p., available only at http://pubs.usgs.gov/sir/2013/5043


2012


Thumbnail Image of SIR 2012-5011 Report Cover

USGS Scientific Investigations Report: SIR 2012-5011

Dieter, C.A., Campo, K.W., and Baker, A.C., Groundwater Quality and Occurrence and Distribution of Selected Constituents in the Aquia and Upper Patapsco Aquifers, Naval Air Station Patuxent River, St. Mary’s County, Maryland, July 2008: U.S. Geological Survey Scientific Investigations Report 2012-5011, 16 p.



Thumbnail Image of SIR 2012-5079 Report Cover

USGS Scientific Investigations Report: SIR 2012-5079

Banks, W.S.L., Masterson, J.P., and Johnson, C.D., 2012, Well Network Installation and Hydrogeologic Data Collection, Assateague Island National Seashore, Worcester County, Maryland, 2010: U.S. Geological Survey Scientific Investigations Report 2012-5079, 20 p.



Thumbnail Image of SIR 2012-5160 Report Cover

USGS Scientific Investigations Report: SIR 2012-5160

Fleming, B.J., Hammond, P.A., Stranko, S.A., Duigon, M.T., and Kasraei, Saeid, 2012, A science plan for a comprehensive assessment of water supply in the region underlain by fractured rock in Maryland: U.S. Geological Survey Scientific Investigations Report 2012–5160, 29 p.



Thumbnail Image of SIR 2012-5165 Report Cover

USGS Scientific Investigations Report: SIR 2012-5165

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2012, Potentiometric surface and water-level difference maps of selected confined aquifers of Southern Maryland and Maryland’s Eastern Shore, 1975–2011: U.S. Geological Survey Scientific Investigations Report 2012–5165, 36 p.



Thumbnail Image of SIR 2012-5235 Report Cover

USGS Scientific Investigations Report: SIR 2012-5235

Clune, J.W., and Denver, J.M., 2012, Residence time, chemical and isotopic analysis of nitrate in the groundwater and surface water of a small agricultural watershed in the Coastal Plain, Bucks Branch, Sussex County, Delaware: U.S. Geological Survey Scientific Investigations Report 2012–5235, 15 p.


2011


Thumbnail Image of SIR 2011-5167 Report Cover

USGS Scientific Investigations Report: SIR 2011-5167

Ator, S.W., Brakebill, J.W. and Blomquist, J.D., 2011, Sources, Fate and Transport of Nitrogen and Phosphorus in the Chesapeake Bay Watershed: An Empirical Model: U.S. Geological Survey Scientific Investigations Report 2011-5167, 27 p.


2010


Thumbnail Image of SIR 2010-5206 Report Cover

USGS Scientific Investigations Report: SIR 2010-5206

Reyes, B., 2010, Occurrence and distribution of organic chemicals and nutrients and comparison of water-quality data from public drinking-water supplies in the Columbia aquifer in Delaware, 2000–08: U.S. Geological Survey Scientific Investigations Report 2010–5206, 64 p.


Thumbnail Image of SIR 2010-5186 Report Cover

USGS Scientific Investigations Report: SIR 2010-5186

Raffensperger, J.P., Fleming, B.J., Banks, W.S.L., Horn, M.A., Nardi, M.R., and Andreasen, D.C., 2010, Simulation of groundwater flow to assess future withdrawals associated with Base Realignment and Closure (BRAC) at Fort George G. Meade, Maryland: U.S. Geological Survey Scientific Investigations Report 2010–5186, 48 p.


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USGS Open-File Report: OFR 2010-1209

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, Potentiometric surface of the Patuxent aquifer in southern Maryland, September 2009: U.S. Geological Survey Open-File Report 2010–1209, 1 sheet, available at http://pubs.usgs.gov/of/2010/1209/.


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USGS Open-File Report: OFR 2010-1208

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, Difference between the potentiometric surfaces of the Lower Patapsco aquifer in southern Maryland, September 1990 and September 2009: U.S. Geological Survey Open-File Report 2010–1208, 1 sheet, available at http://pubs.usgs.gov/of/2010/1208/.


Thumbnail Image of OFR 2010-1207 Report Cover

USGS Open-File Report: OFR 2010-1207

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, Potentiometric surface of the Lower Patapsco aquifer in southern Maryland, September 2009: U.S. Geological Survey Open-File Report 2010–1207, 1 sheet, available at http://pubs.usgs.gov/of/2010/1207/.


Thumbnail Image of OFR 2010-1206 Report Cover

USGS Open-File Report: OFR 2010-1206

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, The difference between the potentiometric surfaces of the Upper Patapsco aquifer in southern Maryland, September 1990 and September 2009: U.S. Geological Survey Open-File Report 2010–1206, 1 sheet, available at http://pubs.usgs.gov/of/2010/1206/.


Thumbnail Image of OFR 2010-1205 Report Cover

USGS Open-File Report: OFR 2010-1205

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009: U.S. Geological Survey Open-File Report 2010–1205, 1 sheet, available at http://pubs.usgs.gov/of/2010/1205/.


Thumbnail Image of OFR 2010-1204 Report Cover

USGS Open-File Report: OFR 2010-1204

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, The difference between the potentiometric surfaces of the Magothy aquifer in Southern Maryland, September 1975 and September 2009: U.S. Geological Survey Open-File Report 2010–1204, 1 sheet, available at http://pubs.usgs.gov/of/2010/1204/.


Thumbnail Image of OFR 2010-1203 Report Cover

USGS Open-File Report: OFR 2010-1203

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, Potentiometric surface of the Magothy aquifer in Southern Maryland, September 2009: U.S. Geological Survey Open-File Report 2010–1203, 1 sheet, available at http://pubs.usgs.gov/of/2010/1203/.


Thumbnail Image of OFR 2010-1202 Report Cover

USGS Open-File Report: OFR 2010-1202

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2010, The difference between the potentiometric surfaces of the Aquia aquifer in Southern Maryland, September 1982 and September 2009: U.S. Geological Survey Open-File Report 2010–1202, 1 sheet, available at http://pubs.usgs.gov/of/2010/1202/.


Thumbnail Image of OFR 2010-1201 Report Cover

USGS Open-File Report: OFR 2010-1201

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Aquia aquifer in southern Maryland, September 2009: U.S. Geological Survey Open-File Report 2010–1201, 1 sheet, at http://pubs.usgs.gov/of/2010/1201/.


2009

Thumbnail Image of SIR 2009-5064 Report Cover

USGS Scientific Investigations Report: SIR 2009-5064

Banks, W.S.L., and Reyes, B., 2009, Anthropogenic organic compounds in source and finished groundwater of community water systems in the Piedmont Physiographic Province, Potomac River Basin, Maryland and Virginia, 2003–04: U.S. Geological Survey Scientific Investigations Report 2009–5064, 33 p.


Thumbnail Image of OFR 2009-1088 Report Cover

USGS Open-File Report: OFR 2009-1088

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Patuxent aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1088, 1 map sheet.


Thumbnail Image of OFR 2009-1087 Report Cover

USGS Open-File Report: OFR 2009-1087

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, The difference between the potentiometric surfaces of the Lower Patapsco aquifer in Southern Maryland, September 1990 and September 2007: U.S. Geological Survey Open-File Report 2009–1087, 1 map sheet.


Thumbnail Image of OFR 2009-1086 Report Cover

USGS Open-File Report: OFR 2009-1086

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Lower Patapsco aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1086, 1 map sheet.


Thumbnail Image of OFR 2009-1085 Report Cover

USGS Open-File Report: OFR 2009-1085

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, The difference between the potentiometric surfaces of the Upper Patapsco aquifer in Southern Maryland, September 1990 and September 2007: U.S. Geological Survey Open-File Report 2009–1085, 1 map sheet.


Thumbnail Image of OFR 2009-1084 Report Cover

USGS Open-File Report: OFR 2009-1084

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Upper Patapsco aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1084, 1 map sheet.


Thumbnail Image of OFR 2009-1083 Report Cover

USGS Open-File Report: OFR 2009-1083

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, The difference between the potentiometric surfaces of the Magothy aquifer in Southern Maryland, September 1975 and September 2007: U.S. Geological Survey Open-File Report 2009–1083, 1 map sheet.


Thumbnail Image of OFR 2009-1082 Report Cover

USGS Open-File Report: OFR 2009-1082

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Magothy aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1082, 1 map sheet.


Thumbnail Image of OFR 2009-1081 Report Cover

USGS Open-File Report: OFR 2009-1081

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, The difference between the potentiometric surfaces of the Aquia aquifer in Southern Maryland, September 1982 and September 2007: U.S. Geological Survey Open-File Report 2009–1081, 1 map sheet.


Thumbnail Image of OFR 2009-1080 Report Cover

USGS Open-File Report: OFR 2009-1080

Curtin, S.E., Andreasen, D.C., and Staley, A.W., 2009, Potentiometric surface of the Aquia aquifer in Southern Maryland, September 2007: U.S. Geological Survey Open-File Report 2009–1080, 1 map sheet.


Thumbnail Image of FS 2009-3032 Report Cover

USGS Fact Sheet: FS 2009-3032

Soeder, D.J., and Kappel, W.M., 2009, Water resources and natural gas production from the Marcellus Shale: U.S. Geological Survey Fact Sheet 2009–3032, 6 p.


Thumbnail Image of FS 2009-3009 Report Cover

USGS Fact Sheet: FS 2009-3009

Bolton, D.W., Gerhart, J.M., and Kasraei, Saeid, 2009, Sustainability of water resources in the fractured-rock area of Maryland: U.S. Geological Survey Fact Sheet 2009–3009, 2 p.


2008

Thumbnail Image of SIR 2008-5190 Report Cover

USGS Scientific Investigations Report: SIR 2008-5190

Ator, S.W., 2008, Natural and human influences on water quality in a shallow regional unconsolidated aquifer, Northern Atlantic Coastal Plain: U.S. Geological Survey Scientific Investigations Report 2008–5190, 19 p. http://pubs.usgs.gov/sir/2008/5190/.


Thumbnail Image of SIR 2008-5144 Report Cover

USGS Scientific Investigations Report: SIR 2008-5144

Dieter, C.A., and Fleck, W.B., 2008, Simulation of ground-water flow and optimization of withdrawals from aquifers at the Naval Air Station Patuxent River, St. Mary’s County, Maryland: U.S. Geological Survey Scientific Investigations Report 2008–5144, 36 p.


Thumbnail Image of FS 2008-3068 Report Cover

USGS Fact Sheet: FS 2008-3068

Ator, S.W., and Reyes, B., 2008, Pesticides in Groundwater of Central and Western Maryland: U.S. Geological Survey Fact Sheet 2008-3068, 6 p.


2007

Thumbnail Image of SIR 2007-5249 Report Cover

USGS Scientific Investigations Report: SIR 2007-5249

Soeder, D.J., Raffensperger, J.P., and Nardi, M.R., 2007, Effects of withdrawals on ground-water levels in Southern Maryland and the adjacent Eastern Shore, 1980–2005: U.S. Geological Survey Scientific Investigations Report 2007–5249, 82 p.


Thumbnail Image of OFR 2007–1205 Report Cover

USGS Open-File Report: OFR 2007–1205

Shedlock, R.J., Bolton, D.W., Cleaves, E.T., Gerhart, J.M., and Nardi, M.R., 2007, A science plan for a comprehensive regional assessment of the Atlantic Coastal Plain aquifer system in Maryland: U.S. Geological Survey Open-File Report 2007–1205, 25 p.


2006

Thumbnail Image of SIR 2006-5266 Report Cover

USGS Scientific Investigations Report: SIR 2006-5266

Klohe, C.A., and Kay, R.T., 2007, Hydrogeology of the Piney Point-Nanjemoy, Aquia, and Upper Patapsco aquifers, Naval Air Station Patuxent River and Webster Outlying Field, St. Marys County, Maryland, 2000–06: U.S. Geological Survey Scientific Investigations Report 2006–5266, 26 p.


Thumbnail Image of SIR 2006-5233 Report Cover

USGS Scientific Investigations Report: SIR 2006-5233

Majcher, E.H., Phelan, D.J., Lorah, M.M., and McGinty, A.L., 2007, Characterization of preferential ground-water seepage from a chlorinated hydrocarbon-contaminated aquifer to West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 2002–04: U.S. Geological Survey Scientific Investigations Report 2006–5233, 191 pages, online only.


Thumbnail Image of SIR 2006-5190 Report Cover

USGS Scientific Investigations Report: SIR 2006-5190

Doheny, E.J., and Fisher, G.T., 2007, Hydraulic geometry characteristics of continuous-record streamflow-gaging stations on four urban watersheds along the main stem of Gwynns Falls, Baltimore County and Baltimore City, Maryland: U.S. Geological Survey Scientific Investigations Report 2006–5190, 24 p.


Thumbnail Image of SIR 2006-5011 Report Cover

USGS Scientific Investigations Report: SIR 2006-5011

Koterba, M.T., Andres, A.S., Vrabel, J., Crilley, D.M., Szabo, Z., DeWild, J.F., Aiken, G.R., and Reyes-Padro, B., 2006, Occurrence and distribution of mercury in the surficial aquifer, Long Neck Peninsula, Sussex County, Delaware, 2003-04: U.S. Geological Survey, Scientific Investigations Report 2006-5011, 163 p.


Thumbnail Image of FS 2006-3009 Report Cover

USGS Fact Sheet: FS 2006-3009

Shedlock, R.J., and Bolton, D.W., 2006, Sustainability of the Groundwater Resources in the Atlantic Coastal Plain of Maryland: U.S. Geological Survey Fact Sheet 2006-3009.


Thumbnail Image of FS 2006-3119 Report Cover

USGS Fact Sheet: FS 2006-3119

Denver, J.M., and Ator, S.W., 2006, Pesticides in Groundwater of the Maryland Coastal Plain: U.S. Geological Survey Fact Sheet 2006-3119, 8 p.


Thumbnail Image of OFR 2006-1392 Report Cover

USGS Open-File Report: OFR 2006-1392

Klohe, C.A., and Debrewer, L.M., 2007, Summary of ground-water-quality data in the Anacostia River Watershed, Washington, D.C., September–December 2005: U.S. Geological Survey Open-File Report 2006–1392, 64 p.


2005

Thumbnail Image of SIR 2005-5257 Report Cover

USGS Scientific Investigations Report: SIR 2005-5257

Debrewer, L.M., Ator, S.W., and Denver, J.M., 2007, Factors affecting spatial and temporal variability in nutrient and pesticide concentrations in the surficial aquifer on the Delmarva Peninsula: U.S. Geological Survey Scientific Investigations Report 2005–5257, 44 p.


Thumbnail Image of FS 2005-3030 Report Cover

USGS Fact Sheet: FS 2005-3030

Gerhart, J.M., and Cleaves, E.T., 2005, The Status of Streamflow and Groundwater level Monitoring Networks in Maryland: U.S. Geological Survey Fact Sheet 2005-3030, 6 p.


USGS Open-File Report: OFR 2005-1004
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, Potentiometric Surface Map of the Aquia Aquifer in Southern Maryland, September, 2003: U.S. Geological Survey Open-File Report 2005–1004, 1 p.

USGS Open-File Report: OFR 2005-1005
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, The Difference Between the Potentiometric Surfaces of the Aquia Aquifer, September 1982 and September 2003 in Southern Maryland: U.S. Geological Survey Open-File Report 2005–1005, 1 p.

USGS Open-File Report: OFR 2005-1006
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, Potentiometric Surface Map of the Magothy Aquifer in Southern Maryland, September, 2003: U.S. Geological Survey Open-File Report 2005–1006, 1 p.

USGS Open-File Report: OFR 2005-1007
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, The Difference Between the Potentiometric Surfaces of the Magothy Aquifer, September 1975 and September 2003 in Southern Maryland: U.S. Geological Survey Open-File Report 2005–1007, 1 p.

USGS Open-File Report: OFR 2005-1008
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, Potentiometric Surface Map of the Upper Patapsco Aquifer in Southern Maryland, September, 2003: U.S. Geological Survey Open-File Report 2005–1008, 1 p.

USGS Open-File Report: OFR 2005-1009
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer, September 1990 and September 2003 in Southern Maryland: U.S. Geological Survey Open-File Report 2005–1009, 1 p.

USGS Open-File Report: OFR 2005-1010
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, Potentiometric Surface Map of the Lower Patapsco Aquifer in Southern Maryland, September, 2003: U.S. Geological Survey Open-File Report 2005–1010, 1 p.

USGS Open-File Report: OFR 2005-1011
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2005, The Difference Between the Potentiometric Surfaces of the Lower Patapsco Aquifer, September 1990 and September 2003 in Southern Maryland: U.S. Geological Survey Open-File Report 2005–1011, 1 p.


2004

USGS Scientific Investigations Report: SIR 2004-5118
Greene, E.A., LaMotte, A.E., and Cullinan, K., 2004, Groundwater Vulnerability to Nitrate Contamination at Multiple Thresholds in the Mid-Atlantic Region Using Spatial Probability Models: U.S. Geological Survey Scientific Investigations Report 2004–5118, 24 p.

USGS Scientific Investigations Report: SIR 2004-5190
Olsen, D.L., and Tenbus, F.J., 2004, Design and Analysis of a Natural-Gradient Groundwater Tracer Test in a Freshwater Tidal Wetland, West Branch Canal Creek, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Scientific Investigations Report 2004-5190, 116 p.

USGS Scientific Investigations Report: SIR 2004-5011
Stewart, M., Guertal, W.R., and Barbaro, J.R., 2004, Distribution of Methyl Tert-Butyl Ether (MTBE) and Selected Water-Quality Constituents in the Surficial Aquifer at the Dover National Test Site, Dover Air Force Base, Delaware, 2001,: U.S. Geological Survey Scientific Investigations Report 2004-5011, 13 p.

USGS Fact Sheet: FS 2004-3067
Greene, E.A., LaMotte, A.E., Cullinan, K., and Smith, E.R., 2004, Groundwater Vulnerability to Nitrate Contamination at Multiple Thresholds in the Mid-Atlantic Region: U.S. Geological Survey Fact Sheet 2004-3067, 4 p.

USGS Open-File Report: OFR 2004-1324
LaMotte, A.E., 2004, Metadata for ReVA Logistic Regression Dataset: U.S. Geological Survey Open-File Report 2004-1324, 9 p.


2003

USGS Water Resources Investigation Report: WRIR 03-4294
Greene, E.A., Shapiro, A.M., and LaMotte, A.E., 2003, Hydrogeologic Controls on Groundwater Discharge to the Washington METRO Subway Tunnel Near the Medical Center Station and Crossover, Montgomery County, Maryland: U.S. Geological Survey Water Resources Investigation Report 03-4294, 33 p.

USGS Open-File Report: OFR 03-318
Tenbus, F.J., 2003, Lithologic Coring in the Lower Anacostia Tidal Watershed, Washington, D.C., July 2002: U.S. Geological Survey Open-File Report 03-318, 62 p.

USGS Open-File Report: OFR 03-380
Guertal, W.R., Stewart, M., Barbaro, J.R., and McHale, T., 2003, Analytical Results From Groundwater Sampling Using a Direct-Push Technique at the Dover National Test Site, Dover Air Force Base, Delaware, June-July 2001: U.S. Geological Survey Open-File Report 03-380, 31 p.

USGS Open-File Report: OFR 03-258
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2003, Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2002, Scale 1:250,000: U.S. Geological Survey Open-File Report 03-258, 1 p.

USGS Open-File Report: OFR 03-257
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2003, Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 2002, Scale 1:250,000: U.S. Geological Survey Open-File Report 03-257, 1 p.

USGS Open-File Report: OFR 03-256
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2003, Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2002, Scale 1:250,000: U.S. Geological Survey Open-File Report 03-256, 1 p.

USGS Open-File Report: OFR 03-255
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2003, Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2002, Scale 1:250,000: U.S. Geological Survey Open-File Report 03-255, 1 p.

USGS Open-File Report: OFR 03-073
Miller, C.V., and Klohe, C.A., 2003, Summary of Water- and Sediment-Quality Data for Anacostia River Well Sites Sampled in July-August 2002: U.S. Geological Survey Open-File Report 03-73, 54 p.

USGS Fact Sheet: FS 091-03
Phillips, S.W., and Lindsey, B.D., 2003, The Influence of Groundwater on Nitrogen Delivery to the Chesapeake Bay: U.S. Geological Survey Fact Sheet 091-03, 6 p.


2002

USGS Water Resources Investigation Report: WRIR 02-4282
Soeder, D.J., and Miller, C.V., 2002, Groundwater Contamination from Lead Shot at Prime Hook National Wildlife Refuge, Sussex County, Delaware: U.S. Geological Survey Water Resources Investigation Report 02-4282, 26 p.

USGS Water Resources Investigation Report: WRIR 02-4076
Phelan, D.J., Fleck, W.B., Lorah, M.M., and Olsen, L.D., 2002, Changes in Groundwater Quality in the Canal Creek Aquifer Between 1995 and 2000–2001, West Branch Canal Creek Area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water Resources Investigation Report 02-4076

USGS Water Resources Investigation Report: WRIR 02-4121
Barbaro, J.R., and Neupane, P.P., 2002, Distribution and Mass Loss of Volatile Organic Compounds in the Surficial Aquifer at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware, November 2000–February 2001: U.S. Geological Survey Water Resources Investigation Report 02-4121, 53 p.

USGS Water Resources Investigation Report: WRIR 02-4029
Dillow, J.A. Banks, W.S.L., and Smigaj, M.J., 2002, Groundwater Quality and Discharge to Chincoteague and Sinepuxent Bays Adjacent to Assateague Island National Seashore, Maryland: U.S. Geological Survey Water Resources Investigation Report 02-4029, 42 p.

USGS Open-File Report: OFR 02-449
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, The Difference Between the Potentiometric Surfaces of the Aquia Aquifer, September 1982 and September 2001 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-449, 1 p.

USGS Open-File Report: OFR 02-448
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 2001, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-448, 1 p.

USGS Open-File Report: OFR 02-447
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer, September 1990 and September 2001 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-447, 1 p.

USGS Open-File Report: OFR 02-446
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 2001, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-446, 1 p.

USGS Open-File Report: OFR 02-445
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, The Difference Between the Potentiometric Surfaces of the Magothy Aquifer, September 1975 and September 2001 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-445, 1 p.

USGS Open-File Report: OFR 02-444
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 2001, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-444, 1 p.

USGS Open-File Report: OFR 02-443
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, The Difference Between the Potentiometric Surfaces of the Aquia Aquifer, September 1982 and September 2001 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-443, 1 p.

USGS Open-File Report: OFR 02-442
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2002, Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2001, Scale 1:250,000: U.S. Geological Survey Open-File Report 02-442, 1 p.


2001

USGS Water Resources Investigation Report: WRIR 01-4216
Banks, W.S.L., and Battigelli, D.A., 2001, Occurrence and Distribution of Microbiological Contamination and Enteric Viruses in Shallow Groundwater in Baltimore and Harford Counties, Maryland: U.S. Geological Survey Water Resources Investigation Report 01-4216, 44 p.

USGS Water Resources Investigation Report: WRIR 01-4147
Banks, W.S.L., Klohe, C.A., and Battigelli, D.A., 2001, Occurrence and Distribution of Enteric Viruses in Shallow Groundwater and Factors Affecting Well Vulnerability to Microbiological Contamination in Worcester and Wicomico Counties, Maryland: Water Resources Investigation Report 01-4147, 28 p.

USGS Water Resources Investigation Report: WRIR 01-4150
Barbaro, J.R., 2001, Assessment of Natural Attenuation of Groundwater Contamination at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware: U.S. Geological Survey Water Resources Investigation Report 01-4150, 53 p.

USGS Water Resources Investigation Report: WRIR 01-4106
Tenbus, F.J., and Fleck, W.B., 2001, Simulation of Groundwater Flow and Transport of Chlorinated Hydrocarbons at Graces Quarters, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water Resources Investigation Report 01-4106, 57 p.

USGS Open-File Report: OFR 01-420
Spencer, T.A., Phelan, D.J., Olsen, L.D., and Lorah, M.M., 2001, Groundwater and Surface-Water Quality Data for the West Branch Canal Creek Area, Aberdeen Proving Ground, Maryland, November 1999–May 2001: U.S. Geological Survey Open-File Report 01-420, 37 p.

USGS Open-File Report: OFR 01-327
Ferrari, M.J., 2001, Occurrence and Distribution of Selected Contaminants in Public Drinking-Water Supplies in the Surficial Aquifer in Delaware: U.S. Geological Survey Open-File Report 01-327, 17 p.

USGS Open-File Report: OFR 01-211
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, The Difference Between the Potentiometric Surfaces of the Lower Patapsco Aquifer, September 1990 and September 1999 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-211, 1 p.

USGS Open-File Report: OFR 01-210
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 1999, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-210, 1 p.

USGS Open-File Report: OFR 01-209
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer, September 1990 and September 1999 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-209, 1 p.

USGS Open-File Report: OFR 01-208
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 1999, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-208, 1 p.

USGS Open-File Report: OFR 01-207
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, The Difference Between The Potentiometric Surfaces of The Magothy Aquifer, September 1975 and September 1999 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-207, 1 p.

USGS Open-File Report: OFR 01-206
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1999, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-206, 1 p.

USGS Open-File Report: OFR 01-205
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, The Difference Between the Potentiometric Surfaces of the Aquia Aquifer, September 1982 and September 1999 in Southern Maryland, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-205, 1 p.

USGS Open-File Report: OFR 01-204
Curtin, S.E., Andreasen, D.C., and Wheeler, J.C., 2001, Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 1999, Scale 1:250,000: U.S. Geological Survey Open-File Report 01-204, 1 p.

USGS Open-File Report: OFR 01-327
Ferrari, M.J., 2001, Occurrence and Distribution of Selected Contaminants in Public Drinking-Water Supplies in the Surficial Aquifer in Delaware: U.S. Geological Survey Open-File Report 01-327, 17 p.


2000

USGS Water Resources Investigation Report: WRIR 00-4283
Banks, W.S.L., and Dillow, J.A., 2000, Optimization of Groundwater Withdrawal at the Old O-Field Area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water Resources Investigation Report 00-4283, 23 p.

USGS Open-File Report: OFR 00-446
Phelan, D.J., Senus, M.P., and Olsen, L.D., 2000, Lithologic and Groundwater-Quality Data Collected Using Hoverprobe Drilling Techniques at the West Branch Canal Creek Wetland, Aberdeen Proving Ground, Maryland, April-May 2000: U.S. Geological Survey Open-File Report 00-446, 43 p.

USGS Open-File Report: OFR 00-208
Senus, M.P., and Tenbus, F.J., 2000, Long-Term Groundwater Monitoring Program and Performance-Evaluation Plan for the Extraction System at the Former Nike Missile Battery Site, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Open-File Report 00-208, 21 p.

USGS Fact Sheet: FS 053-00
Bachman, J.L, and Krantz, D.E., 2000, The Potential for Denitrification of Groundwater by Coastal Plain Sediments in the Patuxent River Basin, Maryland: U.S. Geological Survey Fact Sheet 053-00, 2 figures, 1 table, 4 p.


1999

Open-File Report: OFR 99-88
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, The Difference Between the Potentiometric Surfaces of the Lower Patapsco Aquifer, September 1990 and September 1997 in Southern Maryland, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-88, 1 p.

Open-File Report: OFR 99-87
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 1997, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-87, 1 p.

Open-File Report: OFR 99-86
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, The Difference Between the Potentiometric Surfaces of the Upper Patapsco Aquifer, September 1990 and September 1997 in Southern Maryland, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-86, 1 p.

Open-File Report: OFR 99-85
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, Potentiometric Surface of the Upper Patapsco Aquifer in Southern Maryland, September 1997, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-85, 1 p.

Open-File Report: OFR 99-84
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, The Difference Between the Potentiometric Surfaces of the Magothy Aquifer, September 1975 and September 1997 in Southern Maryland, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-84, 1 p.

Open-File Report: OFR 99-83
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, Potentiometric Surface of the Magothy Aquifer in Southern Maryland, September 1997, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-83, 1 p.

Open-File Report: OFR 99-82
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 1997, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-82, 1 p.

Open-File Report: OFR 99-81
Curtin, S.E., Andreasen, D.C., and Mack, F.K., 1999, The Difference Between the Potentiometric Surfaces of the Aquia Aquifer, September 1982 and September 1997 in Southern Maryland, Scale 1:250,000,: U.S. Geological Survey Open-File Report 99-81, 1 p.

Fact Sheet: FS 126-99
Wheeler, J.C., 1999, Freshwater Use In Delaware, 1995: U.S. Geological Survey Fact Sheet 126-99, 2 figures, 2 p.

Water Resources Investigation Report: WRIR 99-4224
Hinaman, K.C., and Tenbus, F.J., 1999, Hydrogeology and Simulation of Groundwater Flow at Dover Air Force Base, Delaware: U.S. Geological Survey Water Resources Investigation Report 99-4224, 72 p.

Water Resources Investigation Report: WRIR 99-4167
Dillow, J.A., and Greene, E.A., 1999, Groundwater Discharge and Nitrate Loadings to the Coastal Bays of Maryland: U.S. Geological Survey Water Resources Investigation Report 99-167, 8 p.


1998

Water Resources Investigation Report: WRIR 98-4059
Bachman, L.J., Lindsey, B., Brakebill, J., Powars, D.S., 1998, Groundwater Discharge and Base Flow Nitrate Loads of Nontidal Streams, and Their Relation to a Hydrogeomorphic Classification of the Chesapeake Bay Watershed, Middle Atlantic Coast: U.S. Geological Survey Water Resources Investigation Report 98-4059, 71 p.

Water Resources Investigation Report: WRIR 98-4047
Donnelly, C.A. and Tenbus, F.J., 1998, Temporal and vertical variation of hydraulic aquifers in the Edgewood Area, Aberdeen Proving Ground, Maryland: U.S. Geological Survey Water Resources Investigation Report 98-4047, 5 tables, 12 figures, 26 p.

Fact Sheet: FS 98-115
Wheeler, J.C., 1998, Freshwater use in Maryland, 1995: U.S. Geological Survey Fact Sheet 98-115, 2 p.


1997

Open-File Report: OFR 97-666
Donnelly, C.A., Ferrarri, M.J., 1997, Summary of Pesticide Data from Streams Wells in the Potomac River Basin, 1993-96: U.S. Geological Survey Open-File Report 97-666, 8 p.

Water Resources Investigation Report: WRIR 97-4225
Focazio, M.J., Plummer, L.N., Bohike, J.K., Busenberg, E., Bachman, L.J., and Powars, D.S., 1997, Preliminary Estimates of Residence Times and Apparent Ages of Groundwater in the Chesapeake Bay Watershed, and Water Quality Data From a Survey of Springs: U.S. Geological Survey Water Resources Investigation Report 97-4225, 75 p.

Water Resources Investigation Report: WRIR 97-4139
Ator, S.W., and Ferrari, M.J., 1997, Nitrate and selected pesticides in Groundwater of the Mid-Atlantic Region: U.S. Geological Survey Water Resources Investigation Report 97-4139, 8 p.


1995

Water Resources Investigations Report: WRIR 95-4099
Ferrari, M.J., and Ator, S.W., 1995, Nitrate in Groundwater in the Great Valley Carbonate Subunit of the Potomac River Basin: U.S. Geological Survey Water Resources Investigation Report 95-4099, 6 p.


Abstracts

Brakebill, J.W., 1995, Analyzing effects of land use on Groundwater quality in the Potomac River Basin: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, October 24-26, 1995.

Ferrari, M.J., 1994, Assessment of Groundwater quality in the Great Valley Carbonate subunit, Potomac River basin study unit, national water-quality assessment program [abs.]: EOS, Transactions of the American Geophysical Union, v. 75, n. 16, p. 166, Supplement with abstracts for the 1994 Spring Meeting, Baltimore, Md.

Ferrari, M.J., 1994, Assessment of Groundwater quality in the Great Valley Carbonate subunit, Potomac River Basin study unit, national water-quality assessment program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 39.


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